Yes, it's ugly -- I don't need the pseudonymous troll to tell me it looks like shit, I knew it would look like shit before I built it. An extra $1.5k would have meant a nice-looking and more durable deck, but I only need 3-5 years out of this one and I'd rather spend the $1.5k on a motorcycle.
It's kinda sorta mostly square at 17' x 17' (the tent which shall rest on it is a little over 16' in diameter)
It's kinda sorta mostly level in most places (there may be some shimming/leveling of internal furnishings, adjustments in number of rug layers, etc. to get it closer).
In places, it is definitely not flush (I assume there's a standard pallet height, but obviously the pallets I used were not built in a lab where men in white coats used calibers to get the tolerances down to thousandths of an inch).
That turquoise stuff under the front end is the remainder of the 20' tarp that I tucked over before nailing down the last pieces of plywood. I may cut it out once I figure out whether it's good or bad for controlling moisture underneath.
The pallet sticking out of the front end is one of three that I've been using as a porch for the Jayco 806-SD camper office. They'll serve the same purpose for the tent, and I'll probably grab two more regular pallets from the Ace Hardware down the road from me ($2 each!) to put on either side to support a deck box, trash can, etc.
Next, the tent. Probably SOME time this weekend.